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2010-05-25 Initial commit
1 /*
2 encoding.c - character encoding
3 Copyright (C) 2008 siliconforks.com
4
5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation; either version 2 of the License, or
8 (at your option) any later version.
9
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
14
15 You should have received a copy of the GNU General Public License along
16 with this program; if not, write to the Free Software Foundation, Inc.,
17 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
18 */
19
20 #include <config.h>
21
22 #include "encoding.h"
23
24 #include <assert.h>
25 #include <limits.h>
26 #include <string.h>
27
28 #ifdef HAVE_ICONV_H
29 #include <iconv.h>
30 #elif defined HAVE_WINDOWS_H
31 #include <windows.h>
32 #endif
33
34 #include "util.h"
35
36 static void skip_bom(jschar ** characters, size_t * num_characters) {
37 jschar * c = *characters;
38 size_t nc = *num_characters;
39
40 size_t i;
41 for (i = 0; i < nc; i++) {
42 if (c[i] != 0xfeff) {
43 break;
44 }
45 }
46
47 if (i == 0) {
48 return;
49 }
50
51 nc -= i;
52 jschar * old = c;
53 c = xnew(jschar, nc);
54 memcpy(c, old + i, nc * sizeof(jschar));
55 free(old);
56
57 *characters = c;
58 *num_characters = nc;
59 }
60
61 #ifdef HAVE_ICONV
62
63 #ifdef WORDS_BIGENDIAN
64 #define UTF_16_INTERNAL "UTF-16BE"
65 #else
66 #define UTF_16_INTERNAL "UTF-16LE"
67 #endif
68
69 int jscoverage_bytes_to_characters(const char * encoding, const uint8_t * bytes, size_t num_bytes, jschar ** characters, size_t * num_characters) {
70 assert(encoding != NULL);
71
72 iconv_t state = iconv_open(UTF_16_INTERNAL, encoding);
73 if (state == (iconv_t) -1) {
74 return JSCOVERAGE_ERROR_ENCODING_NOT_SUPPORTED;
75 }
76
77 ICONV_CONST char * input = (char *) bytes;
78 size_t input_bytes_left = num_bytes;
79
80 jschar * c = xnew(jschar, num_bytes);
81 char * output = (char *) c;
82 size_t output_bytes_left = sizeof(jschar) * num_bytes;
83
84 size_t result = iconv(state, &input, &input_bytes_left, &output, &output_bytes_left);
85 iconv_close(state);
86 if (result == (size_t) -1) {
87 free(c);
88 return JSCOVERAGE_ERROR_INVALID_BYTE_SEQUENCE;
89 }
90
91 assert(input_bytes_left == 0);
92
93 size_t nc = ((jschar *) output) - c;
94
95 skip_bom(&c, &nc);
96
97 *characters = c;
98 *num_characters = nc;
99 return 0;
100 }
101
102 #elif HAVE_MULTIBYTETOWIDECHAR
103
104 /* http://msdn.microsoft.com/en-us/library/ms776446(VS.85).aspx */
105 static struct CodePage {
106 UINT value;
107 LPCSTR string;
108 } code_pages[] = {
109 {37, "IBM037"}, /* IBM EBCDIC US-Canada */
110 {437, "IBM437"}, /* OEM United States */
111 {500, "IBM500"}, /* IBM EBCDIC International */
112 {708, "ASMO-708"}, /* Arabic (ASMO 708) */
113 {720, "DOS-720"}, /* Arabic (Transparent ASMO); Arabic (DOS) */
114 {737, "ibm737"}, /* OEM Greek (formerly 437G); Greek (DOS) */
115 {775, "ibm775"}, /* OEM Baltic; Baltic (DOS) */
116 {850, "ibm850"}, /* OEM Multilingual Latin 1; Western European (DOS) */
117 {852, "ibm852"}, /* OEM Latin 2; Central European (DOS) */
118 {855, "IBM855"}, /* OEM Cyrillic (primarily Russian) */
119 {857, "ibm857"}, /* OEM Turkish; Turkish (DOS) */
120 {858, "IBM00858"}, /* OEM Multilingual Latin 1 + Euro symbol */
121 {860, "IBM860"}, /* OEM Portuguese; Portuguese (DOS) */
122 {861, "ibm861"}, /* OEM Icelandic; Icelandic (DOS) */
123 {862, "DOS-862"}, /* OEM Hebrew; Hebrew (DOS) */
124 {863, "IBM863"}, /* OEM French Canadian; French Canadian (DOS) */
125 {864, "IBM864"}, /* OEM Arabic; Arabic (864) */
126 {865, "IBM865"}, /* OEM Nordic; Nordic (DOS) */
127 {866, "cp866"}, /* OEM Russian; Cyrillic (DOS) */
128 {869, "ibm869"}, /* OEM Modern Greek; Greek, Modern (DOS) */
129 {870, "IBM870"}, /* IBM EBCDIC Multilingual/ROECE (Latin 2); IBM EBCDIC Multilingual Latin 2 */
130 {874, "windows-874"}, /* ANSI/OEM Thai (same as 28605, ISO 8859-15); Thai (Windows) */
131 {875, "cp875"}, /* IBM EBCDIC Greek Modern */
132 {932, "shift_jis"}, /* ANSI/OEM Japanese; Japanese (Shift-JIS) */
133 {936, "gb2312"}, /* ANSI/OEM Simplified Chinese (PRC, Singapore); Chinese Simplified (GB2312) */
134 {949, "ks_c_5601-1987"}, /* ANSI/OEM Korean (Unified Hangul Code) */
135 {950, "big5"}, /* ANSI/OEM Traditional Chinese (Taiwan; Hong Kong SAR, PRC); Chinese Traditional (Big5) */
136 {1026, "IBM1026"}, /* IBM EBCDIC Turkish (Latin 5) */
137 {1047, "IBM01047"}, /* IBM EBCDIC Latin 1/Open System */
138 {1140, "IBM01140"}, /* IBM EBCDIC US-Canada (037 + Euro symbol); IBM EBCDIC (US-Canada-Euro) */
139 {1141, "IBM01141"}, /* IBM EBCDIC Germany (20273 + Euro symbol); IBM EBCDIC (Germany-Euro) */
140 {1142, "IBM01142"}, /* IBM EBCDIC Denmark-Norway (20277 + Euro symbol); IBM EBCDIC (Denmark-Norway-Euro) */
141 {1143, "IBM01143"}, /* IBM EBCDIC Finland-Sweden (20278 + Euro symbol); IBM EBCDIC (Finland-Sweden-Euro) */
142 {1144, "IBM01144"}, /* IBM EBCDIC Italy (20280 + Euro symbol); IBM EBCDIC (Italy-Euro) */
143 {1145, "IBM01145"}, /* IBM EBCDIC Latin America-Spain (20284 + Euro symbol); IBM EBCDIC (Spain-Euro) */
144 {1146, "IBM01146"}, /* IBM EBCDIC United Kingdom (20285 + Euro symbol); IBM EBCDIC (UK-Euro) */
145 {1147, "IBM01147"}, /* IBM EBCDIC France (20297 + Euro symbol); IBM EBCDIC (France-Euro) */
146 {1148, "IBM01148"}, /* IBM EBCDIC International (500 + Euro symbol); IBM EBCDIC (International-Euro) */
147 {1149, "IBM01149"}, /* IBM EBCDIC Icelandic (20871 + Euro symbol); IBM EBCDIC (Icelandic-Euro) */
148 {1200, "utf-16"}, /* Unicode UTF-16, little endian byte order (BMP of ISO 10646); available only to managed applications */
149 {1201, "unicodeFFFE"}, /* Unicode UTF-16, big endian byte order; available only to managed applications */
150 {1250, "windows-1250"}, /* ANSI Central European; Central European (Windows) */
151 {1251, "windows-1251"}, /* ANSI Cyrillic; Cyrillic (Windows) */
152 {1252, "windows-1252"}, /* ANSI Latin 1; Western European (Windows) */
153 {1253, "windows-1253"}, /* ANSI Greek; Greek (Windows) */
154 {1254, "windows-1254"}, /* ANSI Turkish; Turkish (Windows) */
155 {1255, "windows-1255"}, /* ANSI Hebrew; Hebrew (Windows) */
156 {1256, "windows-1256"}, /* ANSI Arabic; Arabic (Windows) */
157 {1257, "windows-1257"}, /* ANSI Baltic; Baltic (Windows) */
158 {1258, "windows-1258"}, /* ANSI/OEM Vietnamese; Vietnamese (Windows) */
159 {1361, "Johab"}, /* Korean (Johab) */
160 {10000, "macintosh"}, /* MAC Roman; Western European (Mac) */
161 {10001, "x-mac-japanese"}, /* Japanese (Mac) */
162 {10002, "x-mac-chinesetrad"}, /* MAC Traditional Chinese (Big5); Chinese Traditional (Mac) */
163 {10003, "x-mac-korean"}, /* Korean (Mac) */
164 {10004, "x-mac-arabic"}, /* Arabic (Mac) */
165 {10005, "x-mac-hebrew"}, /* Hebrew (Mac) */
166 {10006, "x-mac-greek"}, /* Greek (Mac) */
167 {10007, "x-mac-cyrillic"}, /* Cyrillic (Mac) */
168 {10008, "x-mac-chinesesimp"}, /* MAC Simplified Chinese (GB 2312); Chinese Simplified (Mac) */
169 {10010, "x-mac-romanian"}, /* Romanian (Mac) */
170 {10017, "x-mac-ukrainian"}, /* Ukrainian (Mac) */
171 {10021, "x-mac-thai"}, /* Thai (Mac) */
172 {10029, "x-mac-ce"}, /* MAC Latin 2; Central European (Mac) */
173 {10079, "x-mac-icelandic"}, /* Icelandic (Mac) */
174 {10081, "x-mac-turkish"}, /* Turkish (Mac) */
175 {10082, "x-mac-croatian"}, /* Croatian (Mac) */
176 {12000, "utf-32"}, /* Unicode UTF-32, little endian byte order; available only to managed applications */
177 {12001, "utf-32BE"}, /* Unicode UTF-32, big endian byte order; available only to managed applications */
178 {20000, "x-Chinese_CNS"}, /* CNS Taiwan; Chinese Traditional (CNS) */
179 {20001, "x-cp20001"}, /* TCA Taiwan */
180 {20002, "x_Chinese-Eten"}, /* Eten Taiwan; Chinese Traditional (Eten) */
181 {20003, "x-cp20003"}, /* IBM5550 Taiwan */
182 {20004, "x-cp20004"}, /* TeleText Taiwan */
183 {20005, "x-cp20005"}, /* Wang Taiwan */
184 {20105, "x-IA5"}, /* IA5 (IRV International Alphabet No. 5, 7-bit); Western European (IA5) */
185 {20106, "x-IA5-German"}, /* IA5 German (7-bit) */
186 {20107, "x-IA5-Swedish"}, /* IA5 Swedish (7-bit) */
187 {20108, "x-IA5-Norwegian"}, /* IA5 Norwegian (7-bit) */
188 {20127, "us-ascii"}, /* US-ASCII (7-bit) */
189 {20261, "x-cp20261"}, /* T.61 */
190 {20269, "x-cp20269"}, /* ISO 6937 Non-Spacing Accent */
191 {20273, "IBM273"}, /* IBM EBCDIC Germany */
192 {20277, "IBM277"}, /* IBM EBCDIC Denmark-Norway */
193 {20278, "IBM278"}, /* IBM EBCDIC Finland-Sweden */
194 {20280, "IBM280"}, /* IBM EBCDIC Italy */
195 {20284, "IBM284"}, /* IBM EBCDIC Latin America-Spain */
196 {20285, "IBM285"}, /* IBM EBCDIC United Kingdom */
197 {20290, "IBM290"}, /* IBM EBCDIC Japanese Katakana Extended */
198 {20297, "IBM297"}, /* IBM EBCDIC France */
199 {20420, "IBM420"}, /* IBM EBCDIC Arabic */
200 {20423, "IBM423"}, /* IBM EBCDIC Greek */
201 {20424, "IBM424"}, /* IBM EBCDIC Hebrew */
202 {20833, "x-EBCDIC-KoreanExtended"}, /* IBM EBCDIC Korean Extended */
203 {20838, "IBM-Thai"}, /* IBM EBCDIC Thai */
204 {20866, "koi8-r"}, /* Russian (KOI8-R); Cyrillic (KOI8-R) */
205 {20871, "IBM871"}, /* IBM EBCDIC Icelandic */
206 {20880, "IBM880"}, /* IBM EBCDIC Cyrillic Russian */
207 {20905, "IBM905"}, /* IBM EBCDIC Turkish */
208 {20924, "IBM00924"}, /* IBM EBCDIC Latin 1/Open System (1047 + Euro symbol) */
209 {20932, "EUC-JP"}, /* Japanese (JIS 0208-1990 and 0121-1990) */
210 {20936, "x-cp20936"}, /* Simplified Chinese (GB2312); Chinese Simplified (GB2312-80) */
211 {20949, "x-cp20949"}, /* Korean Wansung */
212 {21025, "cp1025"}, /* IBM EBCDIC Cyrillic Serbian-Bulgarian */
213 {21866, "koi8-u"}, /* Ukrainian (KOI8-U); Cyrillic (KOI8-U) */
214 {28591, "iso-8859-1"}, /* ISO 8859-1 Latin 1; Western European (ISO) */
215 {28592, "iso-8859-2"}, /* ISO 8859-2 Central European; Central European (ISO) */
216 {28593, "iso-8859-3"}, /* ISO 8859-3 Latin 3 */
217 {28594, "iso-8859-4"}, /* ISO 8859-4 Baltic */
218 {28595, "iso-8859-5"}, /* ISO 8859-5 Cyrillic */
219 {28596, "iso-8859-6"}, /* ISO 8859-6 Arabic */
220 {28597, "iso-8859-7"}, /* ISO 8859-7 Greek */
221 {28598, "iso-8859-8"}, /* ISO 8859-8 Hebrew; Hebrew (ISO-Visual) */
222 {28599, "iso-8859-9"}, /* ISO 8859-9 Turkish */
223 {28603, "iso-8859-13"}, /* ISO 8859-13 Estonian */
224 {28605, "iso-8859-15"}, /* ISO 8859-15 Latin 9 */
225 {29001, "x-Europa"}, /* Europa 3 */
226 {38598, "iso-8859-8-i"}, /* ISO 8859-8 Hebrew; Hebrew (ISO-Logical) */
227 {50220, "iso-2022-jp"}, /* ISO 2022 Japanese with no halfwidth Katakana; Japanese (JIS) */
228 {50221, "csISO2022JP"}, /* ISO 2022 Japanese with halfwidth Katakana; Japanese (JIS-Allow 1 byte Kana) */
229 {50222, "iso-2022-jp"}, /* ISO 2022 Japanese JIS X 0201-1989; Japanese (JIS-Allow 1 byte Kana - SO/SI) */
230 {50225, "iso-2022-kr"}, /* ISO 2022 Korean */
231 {50227, "x-cp50227"}, /* ISO 2022 Simplified Chinese; Chinese Simplified (ISO 2022) */
232 {51932, "euc-jp"}, /* EUC Japanese */
233 {51936, "EUC-CN"}, /* EUC Simplified Chinese; Chinese Simplified (EUC) */
234 {51949, "euc-kr"}, /* EUC Korean */
235 {52936, "hz-gb-2312"}, /* HZ-GB2312 Simplified Chinese; Chinese Simplified (HZ) */
236 {54936, "GB18030"}, /* Windows XP and later: GB18030 Simplified Chinese (4 byte); Chinese Simplified (GB18030) */
237 {57002, "x-iscii-de"}, /* ISCII Devanagari */
238 {57003, "x-iscii-be"}, /* ISCII Bengali */
239 {57004, "x-iscii-ta"}, /* ISCII Tamil */
240 {57005, "x-iscii-te"}, /* ISCII Telugu */
241 {57006, "x-iscii-as"}, /* ISCII Assamese */
242 {57007, "x-iscii-or"}, /* ISCII Oriya */
243 {57008, "x-iscii-ka"}, /* ISCII Kannada */
244 {57009, "x-iscii-ma"}, /* ISCII Malayalam */
245 {57010, "x-iscii-gu"}, /* ISCII Gujarati */
246 {57011, "x-iscii-pa"}, /* ISCII Punjabi */
247 {65000, "utf-7"}, /* Unicode (UTF-7) */
248 {65001, "utf-8"}, /* Unicode (UTF-8) */
249 };
250
251 int find_code_page(const char * encoding, UINT * code_page) {
252 for (size_t i = 0; i < sizeof(code_pages) / sizeof(code_pages[0]); i++) {
253 if (strcasecmp(encoding, code_pages[i].string) == 0) {
254 *code_page = code_pages[i].value;
255 return 0;
256 }
257 }
258 return -1;
259 }
260
261 int jscoverage_bytes_to_characters(const char * encoding, const uint8_t * bytes, size_t num_bytes, jschar ** characters, size_t * num_characters) {
262 assert(encoding != NULL);
263
264 if (num_bytes == 0) {
265 *characters = xnew(jschar, 0);
266 *num_characters = 0;
267 return 0;
268 }
269
270 UINT code_page;
271 if (find_code_page(encoding, &code_page) != 0) {
272 return JSCOVERAGE_ERROR_ENCODING_NOT_SUPPORTED;
273 }
274
275 if (num_bytes > INT_MAX) {
276 fatal("overflow");
277 }
278
279 *characters = xnew(jschar, num_bytes);
280
281 int result = MultiByteToWideChar(code_page, MB_ERR_INVALID_CHARS, bytes, num_bytes, *characters, num_bytes);
282 if (result == 0) {
283 free(*characters);
284 return JSCOVERAGE_ERROR_INVALID_BYTE_SEQUENCE;
285 }
286
287 *num_characters = result;
288 skip_bom(characters, num_characters);
289 return 0;
290 }
291
292 #else
293
294 int jscoverage_bytes_to_characters(const char * encoding, const uint8_t * bytes, size_t num_bytes, jschar ** characters, size_t * num_characters) {
295 assert(encoding != NULL);
296
297 if (strcasecmp(encoding, "us-ascii") != 0 && strcasecmp(encoding, "iso-8859-1") != 0 && strcasecmp(encoding, "utf-8") != 0) {
298 return JSCOVERAGE_ERROR_ENCODING_NOT_SUPPORTED;
299 }
300
301 jschar * c = xnew(jschar, num_bytes);
302 for (size_t i = 0; i < num_bytes; i++) {
303 if (bytes[i] > 127) {
304 free(c);
305 return JSCOVERAGE_ERROR_ENCODING_NOT_SUPPORTED;
306 }
307 c[i] = bytes[i];
308 }
309
310 *characters = c;
311 *num_characters = num_bytes;
312 return 0;
313 }
314
315 #endif
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